(x+y)(x-y)=11

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Solution for (x+y)(x-y)=11 equation:


Simplifying
(x + y)(x + -1y) = 11

Multiply (x + y) * (x + -1y)
(x(x + -1y) + y(x + -1y)) = 11
((x * x + -1y * x) + y(x + -1y)) = 11

Reorder the terms:
((-1xy + x2) + y(x + -1y)) = 11
((-1xy + x2) + y(x + -1y)) = 11
(-1xy + x2 + (x * y + -1y * y)) = 11
(-1xy + x2 + (xy + -1y2)) = 11

Reorder the terms:
(-1xy + xy + x2 + -1y2) = 11

Combine like terms: -1xy + xy = 0
(0 + x2 + -1y2) = 11
(x2 + -1y2) = 11

Solving
x2 + -1y2 = 11

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add 'y2' to each side of the equation.
x2 + -1y2 + y2 = 11 + y2

Combine like terms: -1y2 + y2 = 0
x2 + 0 = 11 + y2
x2 = 11 + y2

Simplifying
x2 = 11 + y2

Reorder the terms:
-11 + x2 + -1y2 = 11 + y2 + -11 + -1y2

Reorder the terms:
-11 + x2 + -1y2 = 11 + -11 + y2 + -1y2

Combine like terms: 11 + -11 = 0
-11 + x2 + -1y2 = 0 + y2 + -1y2
-11 + x2 + -1y2 = y2 + -1y2

Combine like terms: y2 + -1y2 = 0
-11 + x2 + -1y2 = 0

The solution to this equation could not be determined.

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